Electron as a wave - some doubts

[logearav]

electron as a wave -- some doubts

Homework Statement

While dealing with deBroglie's idea, my book mentions these points
1) The electron is a wave whose length decreases with energy
2) If you try to squash an electron wave closer to the nucleus, the wavelength must get smaller
3) When its wavelength is as small as a nucleus, its energy becomes so great that the attractive force of the nucleus isn't big enough to keep it there

Homework Equations

The Attempt at a Solution

From the first point, i infer that the wavelength decreases if frequency increases.
But i can't understand the rest of the points. Members can help in this regard.

 

[Spinnor]

For starters see the worked problem number 3 below,

http://quantummechanics.ucsd.edu/ph130a/130_notes/node99.html

 

[logearav]

Thanks Spinnor.